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I believe it is in the Cenozoic Era because they were formed in the last ice age which was during this era.
When it was formed, it was in the Mesozoic era, but it ended in the Cenozoic era.
There are three major forms of fossil fuels: coal, oil and natural gas. All three were formed many hundreds of millions of years ago before the time of the dinosaurs - hence the name fossil fuels. The age they were formed is called the Carboniferous Period. It was part of the Paleozoic Era. "Carboniferous" gets its name from carbon, the basic element in coal and other fossil fuels
Mountains first appeared in the Paleozoic Era.
End of the Mesozoic era
Precambarian- When earth’s atmosphere formed Mesozoic- Ended with a massive impact Paleozoic- When oxygen-breathing organisms first thrived Cenozoic- Began about 65 million years ago Hope this helps! :)
Carboniferous and Permian
Hydrocarbons and coal were formed in what is known as the carboniferous era.
Layers of sediments compressed the layers of vegetation to form the coal deposits.
Coal is very old, it is believed to have been formed from plant matter that became buried in the Carboniferous Era, many millions of years ago.
Coal beds formed during the Carboniferous Period, approximately 300 to 360 million years ago. This period was characterized by extensive forests being buried and compressed over time, eventually transforming into coal deposits.
Dinosaurs did not appear until 40 million year after the end of the Carboniferous era when almost all of our coal resources were created. I find nothing of any significant economic value that formed in the era of the dinosaurs.
first era was the Precambrian
I believe it is in the Cenozoic Era because they were formed in the last ice age which was during this era.
End of the Mesozoic era
When it was formed, it was in the Mesozoic era, but it ended in the Cenozoic era.
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